Scrubbing device



Dec. 22 1925.

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Dec. 22, 1925- 1,566,371

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Patented Dec. 22, 1925.

UNITED STATES THOMAS A. BROWNRIG, OF PORTLAND, MAINE.

SCRUBBING DEVICE.

Application filed September 26, 1924. Serial No. 740,003.

T 0 all whom it may concern Be it known that I, THOMAS A. BROWN RIG, a citizen of the United States of America, residing at Portland, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in Scrubbing Devices, of which the following is a specification.

My invention relates to scrubbing devices, and more especially to that class of scrubbing devices which are mechanically operated.

An important object of my invention is to provide a device of the above mentioned character which has a motion similar to the operation of a scrubbing brush actuated by hand.

Another object of my invention is the provision of a device of the above mentioned character with means for feeding a scouring or cleansing fluid to the surface to be cleaned, at intervals.

A further object of my invention is to provide. an improved arrangement for mounting the scrubbing member and fluid tank on the power unit.

A still further object of my invention is to provide means for adjusting the angle of the face of the scrubbing member.

Another object of my invention is to provide a device of this character which will be inexpensive to manufacture, strong and durable.

Other objects and advantages of'my invention will be apparent during the course of the following description.

In the accompanying drawings, wherein like numerals re resent like or corresponding parts throng out the same;

Figure 1 is a top plan view of my invention,

Figure 2 is a side elevation thereof,

Figure 8 is a front elevation, parts being removed,

Figure 4 is a fragmentary section on the line 44 of Figure 1,

Figure 5 is a detail section showing one position of the scrubbers,

Figure 6 is a similar view showing another position of the scrubbers,

Figure 7 is a detail sectional view showing one position of the scrubbers.

Figure 8 is a similar view showing another position of the scrubbers, and

Figure 9 is a detail sectional view showing the relation of the feed openings and springs to the scrubbing elements.

Figure 10 is a plan view of the handle attaching yoke.

In the drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 10 designates a motor having an armature shaft 11. Rigidly mounted upon this motor are bracket arms 12 which are connected thereto at top and bottom by means of the blocks 13 and bolts 14. Preferably integrally connected to said arms 12 is the casing-15 which is closed by the plate or cover 16. Arranged on the outer surface of said cover 16'are sets of dove-tail tongues 17 which fit in corresponding grooves arranged in the upper surface of scrubbing sections 18. There are two of these scrubbing sections each shown as comprisingfive scrubber supports 19 extending from the section 18. These scrubber supports have their ends dovetailed and are adapted to have strips 20 of felt or other suitable material drawn tightly thereover, the ends of said strips being held in place in the dovetailed ends of the supports 19 by means of the longitudinal attaching strips 21.

Each of the scrubbing sections 18 is provided with a pair of sockets 22 for the reception of coil springs 23.

These sockets are closed at their ends by means of stoppers 24:. Bolts 25 are carried by the casing 15, and project through slots 26 in the scrubbing section, into the sockets 22 and engage the ends of the springs.

Arranged between the scrubbing sections 18 is a cam 27 which is generally elliptical in form and is secured to the shaft 28 which is journaled in the rear wall of the casing 15. Secured to the opposite end of the shaft 28 is the internal gear 29 which is engaged by the pinion 80 carried by the armature shaft 11.

It will be seen that as the cam 27 is rotated by the motor, the scrubbing sections will be forced apart, which action will compress the springs 23 against the bolts 25, and when t e cam releases the sections, the

springs will force them together. This action will give a reciprocating motion to the scrubbers, toward and away from each other, which is very desirable for the proper scrubbing effect.

lVIounted upon the upperbracket arm 12, and the motor 10, is the scouring fluid supply tank 31 which communicates with the interior of the casing 15 by means of the passage 32. The cover 16 of the casing is provided with a series of openings 33, which communicate with corresponding openings 3 1- in the scrubbing sections, when the sections are at the limit of their outward stroke, as illustrated in Figure 8.

It will therefore be seen that at the end of each stroke, scouring fluid from the tank Lil will be fed to the surface of the scrubbers and the surface to be cleaned. This feed 18 not continuous but is intermittent.

The entire device is held on the end of a suitable handle 35 which is provided with a yoke 36 adapted to lit around the motor 10. The yoke has its ends provided with jaws 37 having teeth 38 which engage corresponding teeth 39 on the sides of the motor. These teeth are held in engagement by means of the wing nuts d0. It will be seen that the angle of the handle with respect to the motor may be varied by loosening the nut i0 and turning the handle so as to en gage different teeth.

While I have shown and described the preferred embodiment of my invention it is to be understood that various changes in the size, shape, and arrangement of parts may be resorted to without departing from the spirit of my invention or the scope of the subjoined claims.

Having described my invention, what I claim and desire to protect by Letters Patent is:

1. In a device of the character described, a pair of scrubbing sections, means for intermittently .moving said sections away from each other, spring means to return said sections and means for intermittently feeding a cleaning fluid to the scrubbers at the end of their stroke.

2. In a device of the character described, a pair of scrubbing sections, springs associated with said sections so as to resist their separation, and means to intermittently move said sections away from each other against the tension of the springs, whereby the springs will move the sections toward each other.

3. In a device of the character described, scrubbing sections, springs associated therewith so as to resist separation thereof, cam means to intermittently move the sections away from each other, against the tension of the springs, and means to feed a cleansing fluid to the scrubbers when the sections are at the end of their stroke.

4. In a device of the character described, a casing, scrubbing sections slidably engaging said casing, and having sockets therein, springs arranged in said sockets, bolt members carried by the casing and projecting into the sockets, to engage the ends of the springs, and a cam arranged between said scrubbing sections and adapted to be rotated to move the sections away from each other against the tension of the springs.

5. In a device of the character described, a casing adapted to contain a fluid, scrubbing sections slidably engaging said casing, and having sockets arranged therein, springs arranged in said sockets, means on said casing to project into said sockets and engage the ends of the springs, a cam arranged between said sections and adapted to move the sections away from each other against the tension of the springs, and means to feed the fluid in said casing to the scrubbers at the end of their stroke.

6. In a device of the character described, a casing, scrubbing sections slidably engaging said casing and having sockets therein, springs arranged in said sockets, means on said casing projecting into the sockets to engage the springs, a shaft journalled in said casing, a cam secured to said shaft and arranged between said scrubbing sections to cooperate with the springs for reciprocating the sections, a gear arranged on the opposite end of said shaft, bracket arms carried by the casing, a motor having an armature shaft, supported by said bracket arms, and a pinion secured to said armature shaft and adapted to engage the gear on the cam shaft.

In testimony whereof I afiiX my signature.

THOMAS A. BROVVNRIG. 

